Desanding hose and cutting tool



Jan. 26, 1965 H. w. REINEKE, JR. ETAL 3, 7, 6

DESANDING HOSE AND CUTTING TOOL Filed Aug. 5, 1962 I 34 X Harry M. Heme/re, dz

Kennel/7 L. 00709! IN VENTORS.

United States Patent O ce 3,167,126 j DESANDING H6523 AND CUTTING TUGL Harry W. Reineke, in, 6% never liiace, New Csrieans, La., and Kenneth L. Qilinet, 6% N. Robertson,

Ehalrnette, La.

Filed Aug. 3, 1962, Ser. No. 214,656 2 Ciainis. (Ci. 166-494) This invention relates to a novel and useful desanding hose and cutting tool therefor and is primarily designed for removing the accumulation of foreign material such as sand and the like from the internal surfaces of the tubin string of an oil well.

The desanding hose and cutting tool of the instant invention is adapted to be suspended in the tubing string of an oil well and lowered therethrough.

The hose is capable of containing fluids under extremely high pressure and is flexible. The cutting tool which is secured to the hose is in the form of a generally cylindrical member and means is provided for rotatably mounting one end of the cylindrical member on the lowermost end of the hose for rotation about an axis extending longitudinally of the lower end of the hose and of the cylindrical member. The cylindrical member is opened at opposite ends whereby the interior thereof is disposed in communication with the interior of the hose. The free end of the cylindrical member has a plurality of circumferentially spaced and axially projecting teeth thereon and the cylindrical member is provided with a plurality of circumferentially spaced and outwardly opening passages between its opposite ends. The outer ends of the passages each open along a line disposed at an angle to a radius of the axis of rotation of the cylindrical member passing through the outer end of that passage. In this manner, the discharge of fluid under pressure from the hose outwardly of the cylindrical member will impart rotary movement to the latter by means of the reaction force of the fluid being discharged along a line disposed at an angle to a radius of the axis of rotation of the cylindrical member passing through the point of discharge of the fluid.

The main object of this invention is to provide a desanding hose and cutting tool which may be suspended and lowered into the tubing string of an oil well and utilized to remove the accumulation of foreign material from the internal surfaces of the tubing string.

A further object of this invention, in accordance with the immediately preceding object, is to provide a means whereby the power source for the rotatable cutting tool may also be utilized to convey the foreign material which has been removed but the cutting tool to the upper end of the oil well tubing string.

Still another object of this invention is to provide a desanding hose and cutting tool in accordance with the preceding objects which may be raised or lowered by means of a single drum hoisting unit.

A final object of this invention to be specifically enumerated herein is to provide a desanding hose and cutting tool in accordance with the preceding objects which will conform to conventional forms of manufacture, be of simple construction and easy to use so as to provide a device that will be economically feasible, long lasting and relatively trouble free in operation.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIGURE 1 is an elevational view of the desanding hose 3,l67,l25 Patented Jan. 26 1955 and cutting tool with portions of the hose being broken away and shown in section;

FIGURE 2 is an end elevational view of the embodiment illustrated in FIGURE 1 as seen from the right side thereof;

FIGURE 3 is a transverse sectional view taken substantially upon a plane indicated by the section line 33 of FIGURE 1;

FIGURE 4 is a longitudinal sectional view taken substantially upon a plane indicated by the section .line 44 of FIGURE 3; and

FIGURE 5 is a transverse sectional view taken substantially upon a plane indicated by the section line 5-5 of FIGURE 1.

Referring now more specifically to the drawings the numeral 10 generally designates the desanding tool and cutting assembly of the instant invention. The assembly 10 includes a flexible hose assembly generally referred to by the reference numeral 12 and a cutting tool attachment for the desanding hose which is generally referred to by the reference numeral 14.

With attention now directed more specifically to FIG- URES 1 and 5 of the drawings it will be noted that the flexible hose 12 includes a plurality of concentric hose laminations 16, 18, 20, 22 and 24. The innermost lamination 16 may be constructed of any suitable flexible and resilient material such as rubber and the outermost lamination 2 may be similarly formed. However, the laminations 18, 20, and 22 are reinforcing laminations and may be constructed of rubber impregnated cloth-like material of any suitable type such as a metallic cloth or nylon cloth. However, it will be noted that the'weave of each of the laminations' 18, 20 and 22 is dissimilar to the weave of the adjacent lamination.

The outermost lamination 24 is encased in a cable-like shroud generally referred to by the reference numeral 26 and the shroud 26 comprises a plurality of cable strands generally referred to by the reference numeral 28 disposed in side-by-side spiraled relation about the outer lamination 24. Each of the cable strands consists of a plurality of twisted wire members 30 and in this mariner an extremely durable and strong shroud is provided about the outer lamination 24. b I

The cable-like shroud 26 is in turn encased in a generally cylindrical outer Wear covering of resilient and exible material generally designated by the reference numeral 3?. and the wear covering 32 may also be constructed of rubber.

With attention now directed more specifically to FIG- URES 1 through 4 of the drawings it will be seen that a generally cylindrical member referred to in general by the reference numeral 34 is rotatably journaled on'the free end of the flexible hose assembly 12 and that a thrust bearing 36 is provided to resist any tendency of the cylindrical member 34 to move axially along the flexible hose assembly 12 toward the remote end thereof. As can best be seen in FIGURE 4 of the drawings the cylindrical member 34 has a bore 38 formed longitudinally therethrough which terminates at its end remote from the hose assembly 12 in a diametrically enlarged counterbore 40. The walls of the cylindrical member 34 defining the free end portion of the counterbore 40 also define a plurality of circumferentially spaced and axially projecting teeth 42 and it will be noted that the teeth 42 are each provided with a cutting edge 44 which is beveled inwardly. Additionally, it will be noted that the cutting edges 44 all space in the same direction of rotation of the cylindrical member 34. i

A plurality of generally radially extending passages 46 are formed in the cylindrical member 34 between the counterbore 4d and the thrust bearing 36 and each termiis nates in an angularly disposed outer end portion 4-8. Each of the outer end portions 48 opens outwardly along a line disposed at an angle relative to a radius of the axis of rotation of the cylindrical member 34 passing through the outer end ofthat end portion 43. Accordingly, it may be seen from FIGURE 3 of the drawings that the discharge of fluid under high pressure from the passages 46 will impart a rotary motion to the cylindrical member 34 in the direction indicated by the arrow at the lower portion of FIGURE 3.

The free ends of the flexible hose 12 has a mounting collar 50 mounted thereon in any convenient manner such as by a bonding process. One end of the collar 50 projects outwardly beyond the free end of the flexible hose 12 and has the outer race 52 of a bearing generally referred to by the reference numeral 54 secured therein by means of a plurality of setscrews 56 threadedly engaged in threaded transverse bores 58 formed through the extended end of the collar 50. The adjacent end of the cylindrical member 34 is provided with a diametrically reduced end portion 60 on which there is pressed and secured the outer race 62 of the bearing 54. The outer race 62 is secured on the diametrically reduced end portion 60 by means of a removable snap or lock ring 64. Therefore, it may be seen that the bearing 54 rotatably journals the cylindrical member 34 on the extended end portion of the mounting collar 58 and that the thrust bearing 36 absorbs axial thrust applied to the cylindrical member 34.

In operation, the desanding hose and cutting tool attachment is lowered into a tubing casing from the upper end thereof. Fluid under extremely high pressure is admitted into the upper end of the flexible hose assembly 12 as the latter is lowered into the tubing string. Upon the discharge of the fluid under high pressure from the lower end of the cylindrical member 34, a certain proportion of the fluid will be discharged through the passages 46 which will impart a rotary movement to the cylindrical member 34 as previously set forth. It will be noted from FIGURE 3 of the drawings that the direction of rotation of the cylindrical member 34 will be such that the cutting edges 44 will be disposed forwardly in the direction of movement of the teeth 42. In this manher, as the cylindrical member 34 is lowered into and down the tubing string, the teeth 4-2 will cut the accumulation of foreign material from the interior surfaces of the tubing string. It is to be noted that the cylindrical member 34 will be loosely received in the tubing string whereby the fluid discharged under high pressure from the flexihis hose assembly 12 may pass upwardly past the cylindrical member 34 in the annular area defined between the cylindrical member 34 and the internal surfaces of the tubing string.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. A hose adapted to have one end portion suspended and lowered into the tubing string of an oil well and having a rotary fluid actuated desanding and cutting tool on said one end, said cutting tool comprising a generally cylindrical member, means rotatably mounting one end of said cylindrical member on said one end of said hose for rotation about an axis extending longitudinally of said one end and of said cylindrical member with the interior of said cylindrical member communicated with said one end of said hose, the other end of said cylindrical member having a plurality of circumferentially spaced and axially projecting teeth thereon, said cylindrical member, between said teeth and said one end of said hose, having a plurality of circumferentially spaced outwardly opening passages formed therein and communicated with the interior of said cylindrical member, the outer ends of said passages each opening along a line disposed at an angle to a radius of the axis of rotation of said cylindrical member passing through said outer end of the corresponding passage, said hose comprising a plurality of concentric laminations, said laminations being encased in a cablelike shroud, said cable-like shroud being in turn encased in a generally cylindrical outer Wear covering of resilient and flexible material.

2. The combination of claim 1 wherein said cable-like shroud comprises a plurality of cable strands each consisting of a plurality of twisted wire members, said cable strands being secured in side-by-side spiralled relation aboutsaid laminations.

References Cited in the file of this patent UNITED STATES PATENTS 1,276,536 Iergins Aug. 20, 1918 2,035,088 McNamee Mar. 24, 1936 2,710,980 Fletcher June 21, 1955 3,044,093 Malchow July 17, 1962 

1. A HOSE ADAPTED TO HAVE ONE END PORTION SUSPENDED AND LOWERED INTO THE TUBING STRING OF AN OIL WELL AND HAVING A ROTARY FLUID ACTUATED DESANDING AND CUTTING TOOL ON SAID ONE END, SAID CUTTING TOOL COMPRISING A GENERALLY CYLINDRICAL MEMBER, MEANS ROTATABLY MOUNTING ONE END OF SAID CYLINDRICAL MEMBER ON SAID ONE END OF SAID HOSE FOR ROTATION ABOUT AN AXIS EXTENDING LONGITUDINALLY OF SAID ONE END AND OF SAID CYLINDRICAL MEMBER WITH THE INTERIOR OF SAID CYLINDRICAL MEMBER COMMUNICATED WITH SAID ONE END OF SAID HOSE, THE OTHER END OF SAID CYLINDRICAL MEMBER HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED AND AXIALLY PROJECTING TEETH THEREON, SAID CYLINDRICAL MEMBER, BETWEEN SAID TEETH AND SAID ONE END OF SAID HOSE, HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED OUTWARDLY OPENING PASSAGES FORMED THEREIN AND COMMUNICATED WITH THE INTERIOR OF SAID CYLINDRICAL MEMBER, THE OUTER ENDS OF SAID PASSAGES EACH OPENING ALONG A LINE DISPOSED AT AN ANGLE TO A RADIUS OF THE AXIS OF ROTATION OF SAID CYLINDRICAL MEMBER PASSING THROUGH SAID OUTER END OF THE CORRESPONDING PASSAGE, SAID HOSE COMPRISING A PLURALITY OF CONCENTRIC LAMINATIONS, SAID LAMINATIONS BEING ENCASED IN A CABLELIKE SHROUD, SAID CABLE-LIKE SHROUD BEING IN TURN ENCASED IN A GENERALLY CYLINDRICAL OUTER WEAR COVERING OF RESILIENT AND FLEXIBLE MATERIAL. 